Flood outlook: Mekong at Phnom Penh forecast 3% above its highest level in a year was recorded by Global Incident Tracker on Tuesday, 29 September 2026 at 00:00 UTC. The event is classified as a flood incident with a severity rating of Moderate, and was detected through GLOFAS.
This is a FORECAST, not a recorded flood. The GloFAS model, read through Open-Meteo, puts river discharge on the Mekong near Phnom Penh at about 59,428 cubic metres per second around 2026-09-29. The highest level modelled at this point in the previous 365 days was 57,942. A river is compared only against itself here, because the same figure means very different things on different rivers. Model discharge is not a gauge reading, and a high forecast is not a guarantee of flooding — it is a reason to check what the local authority is saying.
Where this happened
The incident is located in Cambodia (Asia), whose capital is Phnom Penh. Historically, Cambodia is most affected by floods and droughts. You can follow every incident recorded in this country, updated live, on the Cambodia incident tracker.
Approximate coordinates of the reported event are 11.470°, 105.080°. The marker on the map above shows this position; for news-derived reports the location reflects the place named in media coverage and may represent a district or city rather than an exact site.
Understanding flood events
River, flash, urban and coastal flooding events. Flood damage depends less on total rainfall than on how fast water arrives and where it has to go. Flash floods in urban areas can rise within minutes because sealed surfaces stop absorption, while river floods build over days and allow more warning time.
How severity is rated
Global Incident Tracker rates every event on a four-step scale — Minor, Moderate, Severe and Extreme — derived from the source signal: earthquake magnitude, official GDACS alert colour, or the volume of independent media reporting for news-derived incidents. This event is currently rated Moderate. Ratings can change as more information becomes available, and a rating is a monitoring signal rather than an official government assessment.
Safety guidance for flood situations
- Never walk or drive through floodwater — 15 cm of moving water can knock you down and 60 cm can float a car.
- Move to higher floors or higher ground early; do not wait for water to reach you.
- Switch off electricity at the mains if water is entering the building and it is safe to reach.
- Treat all floodwater as contaminated: wash hands, boil drinking water and clean wounds.
- Follow only official instructions from local authorities and emergency services — this page is a monitoring record, not an emergency alert.
Data and verification
This record was generated automatically from GLOFAS and de-duplicated against our archive. Early reports for any incident can be revised: locations get refined, magnitudes are recalculated and impact figures change as assessments arrive. We deliberately do not publish casualty numbers unless an official source states them. The original source report is linked at the top of this page.
Keep watching the situation on our live world incident map, browse every floods we track on the Flood tracker, or see today's global picture on the incidents today page.
Timeline and sources
Forecast
Issued by GloFAS (Copernicus flood forecast). A warning or forecast describes a hazard; on its own it is not a report that harm occurred.
How statuses are decided · the number of reports is never treated as confirmation.
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· received · event time 29 Sep 2026, 00:00 UTCFirst report Forecast
First recorded from GloFAS (Copernicus flood forecast).
Times are when this site received each report, in UTC; the event time is shown where the source gave one. Copies of one syndicated story count as one report.
Conditions at the time
6.9 mm of rain fell that day, and the temperature peaked at 33°C. Conditions are shown for context only — they do not establish a cause.
Weather reanalysis for this location and date via Open-Meteo.